code: def setup_method(self) -> None:
      self.unique_suffix = "".join(
          random.choices(string.ascii_lowercase, k=10)
      )
      self.name = f"airflow-system-test-{self.unique_suffix}"
      self.secret_name = f"airflow-connections-{self.name}"
  
file_path: airflow/tests/providers/google/cloud/secrets/test_secret_manager_system.py
imports: from __future__ import annotations
  import random
  import string
  import subprocess
  from unittest import mock
  import pytest
  from tests.providers.google.cloud.utils.gcp_authenticator import GCP_SECRET_MANAGER_KEY
  from tests.test_utils.gcp_system_helpers import GoogleSystemTest, provide_gcp_context
label_desc: Use image node_id 1 for calling the TestCloudSecretManagerBackendConnectionSystem obj's underlying member method code with example usage: obj.setup_method() without return types